What Is One Likely Explanation for Why Puberty Starts Earlier

question 188

Multiple Choice

What is one likely explanation for why puberty starts earlier now than it did long ago?​

• A)Increased weight gain has led to higher levels of the hormone leptin
• B)​An increased percentage of mothers today have a college education.
• C)​Teenage sexual activity has become more common and more accepted.
• D)​Natural selection has favored genes that cause early onset of puberty.

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Definitions:

Discount Rate

The interest rate used to calculate the present value of future cash flows.

Present Values

The today's worth of a future cash amount or cash flow series, determined by a given rate of return.

Discounting

The process of determining the present value of future cash flows by applying a discount rate, reflecting the time value of money.

Compounding

The process in which the value of an investment increases because the earnings on an investment, both capital gains and interest, earn interest as time passes.